Such philosophy as shall not vanish in the fume of subtile, sublime, or delectable speculation but shall be operative to the endowment and betterment of man's life.
The fact is there is nothing that you can trust; and that is a terrible fact, whether you like it or not. Psychologically there is nothing in the world, that you can put your faith, your trust, or your belief in. Neither your gods, nor your science can save you, can bring you psychological certainty; and you have to accept that you can trust in absolutely nothing.
Ahimsa is the attribute of the soul, and therefore, to be practiced by everybody in all affairs of life. If it cannot be practiced in all departments, it has no practical value.